The StainStopper Pulse was the only effective solution for the deep well our client presented with. Getting the electrics sorted was a fair bit but we got a safe, reliable switched connection to the Pulse unit.
A new book "Karst: Environment and Management of Aquifers" has been published by the Groundwater Project and is available as a free download at: https://gw-project.org/books/karst-environment-and-mana